Low3.1Red Hat Linux

Low [CVE-2026-1190] Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData

This low-severity Red Hat Linux advisory covers CVE-2026-1190 affecting rhbk/keycloak-operator-bundle:26.4.10, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4.

CVE-2026-1190 Published Jan 19, 2026

CVE-2026-1190

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Keycloak SAML brokering: Response delay due to unchecked NotOnOrAfter in SubjectConfirmationData. Red Hat rates this low (CVSS 3.1).

Weakness: CWE-112. Affected package(s): rhbk/keycloak-rhel9, rhbk/keycloak-operator-bundle:26.4.10, rhbk/keycloak-rhel9-operator:26.4, rhbk/keycloak-rhel9:26.4.

Resolved in Red Hat advisory RHSA-2026:3947 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux.

Affected versions

rhbk/keycloak-rhel9
rhbk/keycloak-operator-bundle:26.4.10-1
rhbk/keycloak-rhel9-operator:26.4-12
rhbk/keycloak-rhel9:26.4-12

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:3947

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:3947 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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